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<div id="overview"><a href="../../../../../../../guava-reflection/target/site/apidocs/com/google/code/guava/beans/Properties.html">View Javadoc</a></div><pre>

<a class="jxr_linenumber" name="1" href="#1">1</a>   <strong class="jxr_keyword">package</strong> com.google.code.guava.beans;
<a class="jxr_linenumber" name="2" href="#2">2</a>   
<a class="jxr_linenumber" name="3" href="#3">3</a>   <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> com.google.common.base.Preconditions.checkArgument;
<a class="jxr_linenumber" name="4" href="#4">4</a>   <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> com.google.common.base.Preconditions.checkNotNull;
<a class="jxr_linenumber" name="5" href="#5">5</a>   
<a class="jxr_linenumber" name="6" href="#6">6</a>   <strong class="jxr_keyword">import</strong> java.beans.BeanInfo;
<a class="jxr_linenumber" name="7" href="#7">7</a>   <strong class="jxr_keyword">import</strong> java.beans.PropertyDescriptor;
<a class="jxr_linenumber" name="8" href="#8">8</a>   
<a class="jxr_linenumber" name="9" href="#9">9</a>   <strong class="jxr_keyword">import</strong> com.google.code.guava.beans.Property.PropertyToName;
<a class="jxr_linenumber" name="10" href="#10">10</a>  <strong class="jxr_keyword">import</strong> com.google.common.collect.ImmutableSortedSet;
<a class="jxr_linenumber" name="11" href="#11">11</a>  <strong class="jxr_keyword">import</strong> com.google.common.collect.Iterables;
<a class="jxr_linenumber" name="12" href="#12">12</a>  
<a class="jxr_linenumber" name="13" href="#13">13</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../com/google/code/guava/beans/Properties.html">Properties</a>{
<a class="jxr_linenumber" name="14" href="#14">14</a>  
<a class="jxr_linenumber" name="15" href="#15">15</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../../com/google/code/guava/beans/Properties.html">Properties</a>(){}
<a class="jxr_linenumber" name="16" href="#16">16</a>  
<a class="jxr_linenumber" name="17" href="#17">17</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> &lt;X&gt; Property&lt;X&gt; getPropertyByName(<strong class="jxr_keyword">final</strong> BeanInfo beanInfo,
<a class="jxr_linenumber" name="18" href="#18">18</a>          <strong class="jxr_keyword">final</strong> String propertyName){
<a class="jxr_linenumber" name="19" href="#19">19</a>          <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> Property&lt;X&gt;(
<a class="jxr_linenumber" name="20" href="#20">20</a>              Introspection.findDescriptor(checkNotNull(beanInfo),<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="21" href="#21">21</a>                  checkNotNull(propertyName)<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="22" href="#22">22</a>              ));
<a class="jxr_linenumber" name="23" href="#23">23</a>      }
<a class="jxr_linenumber" name="24" href="#24">24</a>  
<a class="jxr_linenumber" name="25" href="#25">25</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> &lt;X&gt; Property&lt;X&gt; getPropertyByName(<strong class="jxr_keyword">final</strong> Class&lt;?&gt; clazz,
<a class="jxr_linenumber" name="26" href="#26">26</a>          <strong class="jxr_keyword">final</strong> String propertyName){
<a class="jxr_linenumber" name="27" href="#27">27</a>          <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> Property&lt;X&gt;(<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="28" href="#28">28</a>              Introspection.findDescriptor(Introspection.getBeanInfo(<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="29" href="#29">29</a>                  checkNotNull(clazz)),<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="30" href="#30">30</a>                  checkNotNull(propertyName)<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="31" href="#31">31</a>              )
<a class="jxr_linenumber" name="32" href="#32">32</a>          );
<a class="jxr_linenumber" name="33" href="#33">33</a>      }
<a class="jxr_linenumber" name="34" href="#34">34</a>  
<a class="jxr_linenumber" name="35" href="#35">35</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> &lt;X&gt; Property&lt;X&gt; getPropertyByName(<strong class="jxr_keyword">final</strong> Object bean,
<a class="jxr_linenumber" name="36" href="#36">36</a>          <strong class="jxr_keyword">final</strong> String propertyName){
<a class="jxr_linenumber" name="37" href="#37">37</a>          <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> Property&lt;X&gt;(<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="38" href="#38">38</a>              Introspection.findDescriptor(<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="39" href="#39">39</a>                  checkNotNull(bean).getClass(),<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="40" href="#40">40</a>                  checkNotNull(propertyName)<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="41" href="#41">41</a>              )<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="42" href="#42">42</a>          );
<a class="jxr_linenumber" name="43" href="#43">43</a>      }
<a class="jxr_linenumber" name="44" href="#44">44</a>  
<a class="jxr_linenumber" name="45" href="#45">45</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> ImmutableSortedSet&lt;String&gt; getPropertyNames(<strong class="jxr_keyword">final</strong> Object bean){
<a class="jxr_linenumber" name="46" href="#46">46</a>          <strong class="jxr_keyword">return</strong> ImmutableSortedSet.copyOf(Iterables.transform(<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="47" href="#47">47</a>              Introspection.listPropertyDescriptors(bean),
<a class="jxr_linenumber" name="48" href="#48">48</a>              PropertyToName.INSTANCE)<em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="49" href="#49">49</a>          );
<a class="jxr_linenumber" name="50" href="#50">50</a>      }
<a class="jxr_linenumber" name="51" href="#51">51</a>  
<a class="jxr_linenumber" name="52" href="#52">52</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> &lt;X&gt; Property&lt;X&gt; getPropertyfromDescriptor(
<a class="jxr_linenumber" name="53" href="#53">53</a>          <strong class="jxr_keyword">final</strong> PropertyDescriptor descriptor){
<a class="jxr_linenumber" name="54" href="#54">54</a>          <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> Property&lt;X&gt;(descriptor);
<a class="jxr_linenumber" name="55" href="#55">55</a>      }
<a class="jxr_linenumber" name="56" href="#56">56</a>  
<a class="jxr_linenumber" name="57" href="#57">57</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="58" href="#58">58</a>  <em class="jxr_javadoccomment">     * Factory method: get a named Property of the specified type from a Bean</em>
<a class="jxr_linenumber" name="59" href="#59">59</a>  <em class="jxr_javadoccomment">     * object.</em>
<a class="jxr_linenumber" name="60" href="#60">60</a>  <em class="jxr_javadoccomment">     * </em>
<a class="jxr_linenumber" name="61" href="#61">61</a>  <em class="jxr_javadoccomment">     * @param &lt;T&gt;</em>
<a class="jxr_linenumber" name="62" href="#62">62</a>  <em class="jxr_javadoccomment">     * @param name</em>
<a class="jxr_linenumber" name="63" href="#63">63</a>  <em class="jxr_javadoccomment">     *            the property name</em>
<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment">     * @param type</em>
<a class="jxr_linenumber" name="65" href="#65">65</a>  <em class="jxr_javadoccomment">     *            the property type</em>
<a class="jxr_linenumber" name="66" href="#66">66</a>  <em class="jxr_javadoccomment">     * @param bean</em>
<a class="jxr_linenumber" name="67" href="#67">67</a>  <em class="jxr_javadoccomment">     *            the bean object</em>
<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment">     * @return the property</em>
<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment">     * @exception IllegalArgumentException</em>
<a class="jxr_linenumber" name="70" href="#70">70</a>  <em class="jxr_javadoccomment">     *                If the specified type doesn't match the Property's type.</em>
<a class="jxr_linenumber" name="71" href="#71">71</a>  <em class="jxr_javadoccomment">     * @exception NullPointerException</em>
<a class="jxr_linenumber" name="72" href="#72">72</a>  <em class="jxr_javadoccomment">     *                if any of the parameters is null</em>
<a class="jxr_linenumber" name="73" href="#73">73</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="74" href="#74">74</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> &lt;T&gt; BeanProperty&lt;T&gt; getBeanPropertyByNameAndType(<strong class="jxr_keyword">final</strong> String name,
<a class="jxr_linenumber" name="75" href="#75">75</a>          <strong class="jxr_keyword">final</strong> Class&lt;T&gt; type, <strong class="jxr_keyword">final</strong> Object bean){
<a class="jxr_linenumber" name="76" href="#76">76</a>          <strong class="jxr_keyword">final</strong> Property&lt;T&gt; property =
<a class="jxr_linenumber" name="77" href="#77">77</a>              getPropertyByName(Introspection.getBeanInfo(checkNotNull(bean)),
<a class="jxr_linenumber" name="78" href="#78">78</a>                  checkNotNull(name));
<a class="jxr_linenumber" name="79" href="#79">79</a>          checkArgument(checkNotNull(type).isAssignableFrom(property.getType()),
<a class="jxr_linenumber" name="80" href="#80">80</a>              <span class="jxr_string">"Bad type: %s for property: %s, required type: %s"</span>,
<a class="jxr_linenumber" name="81" href="#81">81</a>              type,
<a class="jxr_linenumber" name="82" href="#82">82</a>              name,
<a class="jxr_linenumber" name="83" href="#83">83</a>              property.getType());
<a class="jxr_linenumber" name="84" href="#84">84</a>          <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> BeanProperty&lt;T&gt;(bean, property);
<a class="jxr_linenumber" name="85" href="#85">85</a>      }
<a class="jxr_linenumber" name="86" href="#86">86</a>  
<a class="jxr_linenumber" name="87" href="#87">87</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment">     * Factory method: get a named Property from a Bean object. With this</em>
<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment">     * method, there is no way to verify the property type. Use</em>
<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment">     * {@link #getBeanPropertyByNameAndType(String, Class, Object)} if you need</em>
<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_javadoccomment">     * type safety.</em>
<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_javadoccomment">     * </em>
<a class="jxr_linenumber" name="93" href="#93">93</a>  <em class="jxr_javadoccomment">     * @param &lt;T&gt;</em>
<a class="jxr_linenumber" name="94" href="#94">94</a>  <em class="jxr_javadoccomment">     *            the generic type</em>
<a class="jxr_linenumber" name="95" href="#95">95</a>  <em class="jxr_javadoccomment">     * @param name</em>
<a class="jxr_linenumber" name="96" href="#96">96</a>  <em class="jxr_javadoccomment">     *            the property name</em>
<a class="jxr_linenumber" name="97" href="#97">97</a>  <em class="jxr_javadoccomment">     * @param bean</em>
<a class="jxr_linenumber" name="98" href="#98">98</a>  <em class="jxr_javadoccomment">     *            the bean object</em>
<a class="jxr_linenumber" name="99" href="#99">99</a>  <em class="jxr_javadoccomment">     * @return the property</em>
<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment">     * @exception NullPointerException</em>
<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment">     *                if any of the parameters is null</em>
<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="103" href="#103">103</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> &lt;T&gt; BeanProperty&lt;T&gt; getBeanPropertyByName(<strong class="jxr_keyword">final</strong> String name,
<a class="jxr_linenumber" name="104" href="#104">104</a>         <strong class="jxr_keyword">final</strong> Object bean){
<a class="jxr_linenumber" name="105" href="#105">105</a>         <strong class="jxr_keyword">final</strong> Property&lt;T&gt; property = getPropertyByName(bean, name);
<a class="jxr_linenumber" name="106" href="#106">106</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> BeanProperty&lt;T&gt;(bean, property);
<a class="jxr_linenumber" name="107" href="#107">107</a>     }
<a class="jxr_linenumber" name="108" href="#108">108</a> 
<a class="jxr_linenumber" name="109" href="#109">109</a> }
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